Hilti 2075614 Use and Care Manual
Contents
1. AG 450 7 S D Operating instructions en Mode d emploi fr Manual de instrucciones es Manual de instru es pt 6 6 O 9 This Product is Certified Ce produit est homologu Producto homologado por Este produto esta registrado Bus ORIGINAL OPERATING INSTRUCTIONS AG 450 7 S D angle grinder It is essential that the operating instructions are read before the power tool is operated for the first time Always keep these operating instructions to gether with the power tool Ensure that the operating instructions are with the power tool when it is given to other persons Contents Page 1 General information 1 2 Description 2 3 Consumables 4 4 Technical data 4 5 Safety instructions 5 6 Before use 9 7 Operation 10 8 Care and maintenance 11 9 Troubleshooting 12 10 Disposal 12 11 Manufacturer s warranty tools 12 These numbers refer to the corresponding illustra tions The illustrations can be found on the fold out cover pages Keep these pages open while studying the oper ating instructions In these operating instructions the designation power tool always refers to the AG 450 7S or AG 450 7D angle grinder Operating controls and parts 1 Spindle lockbutton 2 Steadying rib 3 On off switch 4 Side handle Threaded bushing for grip 6 Keyed locating lug 7 Spindle Adjusting screw 9 Clamping lever Clamping flange 11 Clamping nut 2 Switch on int2. away and cause injury beyond immediate area of operation j Hold the power tool by insulated gripping surfaces only when performing an operation where the cutting accessory may contact hidden wiring or its own cord Cutting accessory contacting a live wire may make exposed metal parts of the power tool live and could give the operator an electric shock k Position the cord clear of the spinning accessory If you lose control the cord may be cut or snagged and your hand or arm may be pulled into the spinning accessory D Never lay the power tool down until the acces sory has come to a complete stop The spinning accessory may grab the surface and pull the power tool out of your control m Do not run the power tool while carrying it at your side Accidental contact with the spinning accessory could snag your clothing pulling the accessory into your body n Regularly clean the power tool s air vents The motor s fan will draw the dust inside the housing and excessive accumulation of powdered metal may cause electrical hazards o Do not operate the power tool near flammable materials Sparks could ignite these materials p Do not use accessories that require liquid coolants Using water or other liquid coolants may result in electrocution or shock 5 3 Kickback and related warnings Kickback is a sudden reaction to a pinched or snagged rotating wheel backing pad brush or any other acces sory Pinching or snagging c
3. This will ensure that the safety of the power tool is maintained 5 2 Safety warnings common for grinding sanding wire brushing polishing or abrasive cutting off operations a This power tool is intended to function as a grinder sander wire brush or cut off tool Read all safety warnings instructions illustrations and specifications provided with this power tool Fail ure to follow all instructions listed below may result in electric shock fire and or serious injury b Operations such polishing are not recommended to be performed with this power tool Operations for which the power tool was not designed may create a hazard and cause personal injury c Donotuse accessories which are not specifically designed and recommended by the tool manufac turer Just because the accessory can be attached to your power tool it does not assure safe operation d The rated speed of the accessory must be at least equal to the maximum speed marked on the power tool Accessories running faster than their rated speed can break and fly apart e The outside diameter and the thickness of your accessory must be within the capacity rating of your power tool Incorrectly sized accessories can not be adequately guarded or controlled f Threaded mounting of accessories must match the grinder spindle thread For accessories mounted by flanges the arbour hole of the accessory must fit the locating diameter of the flange Accessories that do not matc
4. breakage Flanges for cut off wheels may be different from grinding wheel flanges Do not use worn down wheels from larger power tools Wheel intended for larger power tool is not suitable for the higher speed of a smaller tool and may burst 5 5 Additional safety warnings specific for abrasive a cutting off operations Do not jam the cut off wheel or apply excessive pressure Do not attempt to make an excessive depth of cut Overstressing the wheel increases the loading and susceptibility to twisting or binding of the wheel in the cut and the possibility of kickback or wheel breakage Do not position your body in line with and behind the rotating wheel When the wheel at the point of operation is moving away from your body the possible kickback may propel the spinning wheel and the power tool directly at you When wheel is binding or when interrupting a cut for any reason switch off the power tool and hold the power tool motionless until the wheel comes to a complete stop Never attempt to remove the cut off wheel from the cut while the wheel is in motion otherwise kickback may occur Investigate and take corrective action to eliminate the cause of wheel binding Do not restart the cutting operation in the work piece Let the wheel reach full speed and carefully re enter the cut The wheel may bind walk up or kickback if the power tool is restarted in the work piece Support panels or any oversized workpiece to minim
5. eye protection DANGER The operator and bystanders must wear breathing protection if the work causes dust WARNING Avoid touching rotating parts Switch the power tool on only after bringing it into position at the workpiece Touching rotating parts especially rotating insert tools may lead to injury CAUTION The insert tool may get hot during use Wear protective gloves when changing insert tools WARNING Reduce the load on the power tool by avoiding tilt ing the disc in the kerf when cutting The disc may otherwise break or the power tool may kick back or stall CAUTION Improve the blood circulation in your fingers by re laxing your hands and exercising your fingers during breaks between working WARNING Keep inflammable materials away from the working area CAUTION In accordance with the applications for which it is de signed the power tool produces a high torque Always use the side handle and hold the power tool with both hands The user must be prepared for sudden sticking and stalling of the insert tool CAUTION Working on the material may cause it to splinter Wear eye protection and protective gloves Wear breathing protection if no dust removal system is used Splin tering material presents a risk of injury to the eyes and body 7 1 Rough grinding CAUTION Never use abrasive cutting discs for grinding Best results are obtained when the disc maintains an angle of 5 to 30 with the working sur
6. may negatively affect the elec trical safety of the tool Always keep the grip surfaces of the tool free from oil and grease Do not use cleaning agents which contain silicone NOTE Frequent work on conductive materials e g metal car bon fiber may make shorter maintenance intervals nec essary Take your individual work place risk assessment into account 8 2 Maintenance WARNING Do not operate the tool if parts are damaged or when the controls do not function faultlessly If necessary the power tool should be repaired by Hilti Service WARNING Repairs to the electrical section of the power tool may be carried out only by trained electrical specialists Check all external parts of the power tool for damage at regular intervals and check that all controls operate faultlessly 8 3 Checking the power tool after care and maintenance After carrying out care and maintenance work on the power tool check that all protective and safety devices are fitted and that they function faultlessly 9 Troubleshooting Fault Possible cause The power tool doesn t start The supply cord or plug is defective The carbon brushes are worn The power tool doesn t achieve full power Interruption in the electric supply The extension cord s conductor cross section is inadequate Remedy Plug in another electric appliance and check whether it works Have the parts checked by a trained electrical specialist and replac
7. surface of the power tool especially dust from conductive materials may present a risk of electric shock When working outdoors with an electric tool check to ensure that the tool is connected to the electric supply by way of a ground fault circuit interrupter GFCI with a rating of max 30 mA tripping current Use of a ground fault circuit interrupter reduces the risk of electric shock Use of a ground fault circuit interrupter GFCI with a maximum tripping current of 30 mA is recommended 5 7 4 Work area a b Ensure that the workplace is well lit Ensure that the workplace is well ventilated Ex posure to dust at a poorly ventilated workplace may result in damage to the health 5 7 5 Personal protective equipment 4 E The user and any other persons in the vicinity must wear ANSI Z87 1 approved eye protection a hard hat ear protection protective gloves and breathing protection while the machine is in use 6 Before use WARNING Never use the power tool without the guard DANGER Disconnect the plug from the power source before making any adjustments changing accessories or storing the tool Such preventive safety measures reduce the risk of starting the tool accidentally 6 1 Fitting the side handle WARNING The side handle must be fitted for all types of work The side handle may be screwed onto the power tool on the right or left 6 2 Guard CAUTION Wear gloves when fitting or remo
8. was designed Do not use the power tool if the switch does not turn it on and off Any power tool that cannot be controlled with the switch is dangerous and must be repaired Disconnect the plug from the power source and or the battery pack from the power tool before making any adjustments changing accessories or storing power tools Such preventive safety measures reduce the risk of starting the power tool accidentally Store idle power tools out of the reach of chil dren and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool Power tools are dangerous in the hands of untrained users Maintain power tools Check for misalignment or binding of moving parts breakage of parts and any other condition that may affect the power tool s operation If damaged have the power tool repaired before use Many accidents are caused by poorly maintained power tools Keep cutting tools sharp and clean Properly main tained cutting tools with sharp cutting edges are less likely to bind and are easier to control Use the power tool accessories and tool bits etc in accordance with these instructions taking into account the working conditions and the work to be performed Use of the power tool for opera tions different from those intended could result in a hazardous situation 5 1 5 Service a Have your power tool serviced by a qualified repair person using only identical replacement parts
9. with integrated thread 1 Screw the accessory onto the drive spindle 2 CAUTION Do not press the spindle lockbutton before the drive spindle has stopped rotating Press the spindle lockbutton and hold it in this position 3 Use the open end wrench to tighten the accessory securely and then release the spindle lockbutton 4 To remove this follow the instructions for fitting the module but carry out the steps in the reverse order 7 Operation NOTE Adjust the position of the guard to suit the requirements of the work being done DANGER Wear ear protectors Exposure to noise can cause hear ing loss WARNING Test new cutting or grinding discs by allowing them to run at maximum speed in a protected area for at least 60 seconds WARNING Slits cut in loadbearing walls of buildings or other struc tures may influence the statics of the structure especially when steel reinforcing bars or load bearing components are cut through Consult the structural engineer ar chitect or person in charge of the building project before beginning the work WARNING The electric supply voltage must comply with the information given on the type identification plate on the power tool WARNING Always use the side handle with the power tool WARNING Never use the power tool without the guard 10 CAUTION Use clamps or a vice to hold the workpiece securely WARNING Cutting or grinding may cause splintering of the material Wear
10. W DC D 3CS 3SS 4CS 4SS Clamping nut not x x x x x x E for use with ac cessories with in tegrated thread Clamping flange X X X X x x not for use with accessories with integrated thread 4 Technical data Right of technical changes reserved Power tool AG 450 7S AG 450 7D Rated voltage 120 V 120 V Rated speed 11 500 min 11 500 min Dimensions L x H x W without 284 mm 11 18 x 79 mm 3 11 x 279 mm 10 98 x 79 mm 3 11 x hood 103 mm 4 06 103 mm 4 06 Weight of power tool 2 0 kg 4 41 Ib 2 0 kg 4 41 Ib Information about the power tool and applications Abrasive cutting discs abrasive grinding discs Y Max 4 5 Drive spindle thread arbor size s 11 Protection class Protection class II double insulated 5 Safety instructions 5 1 General Power Tool Safety Warnings a ZN WARNING Read all safety warnings and instructions Failure to follow the warnings and instructions may result in electric shock fire and or serious injury Save all warnings and instructions for future reference The term power tool in the warnings refers to your mains operated corded power tool or battery operated cordless power tool 5 1 1 Work area safety a b Keep work area clean and well lit Cluttered or dark areas invite accidents Do not operate power tools in explosive atmo spheres such as in the presence of flammable liquids gases or dust Power tools create sparks which may ignite the dust or fum
11. auses rapid stalling of the rotating accessory which in turn causes the uncontrolled power tool to be forced in the direction opposite of the accessory s rotation at the point of the binding For example if an abrasive wheel is snagged or pinched by the workpiece the edge of the wheel that is entering into the pinch point can dig into the surface of the material causing the wheel to climb out or kick out The wheel may either jump toward or away from the operator depending on direction of the wheel s movement at the point of pinching Abrasive wheels may also break under these conditions Kickback is the result of power tool misuse and or in correct operating procedures or conditions and can be avoided by taking proper precautions as given below a Maintain a firm grip on the power tool and po sition your body and arm to allow you to resist kickback forces Always use auxiliary handle if provided for maximum control over kickback or torque reaction during start up The operator can control torque reactions or kickback forces if proper precautions are taken Never place your hand near the rotating acces sory Accessory may kickback over your hand Do not position your body in the area where power tool will move if kickback occurs Kickback will propel the tool in direction opposite to the wheel s movement at the point of snagging Use special care when working corners sharp edges etc Avoid bouncing and snagging the ac c
12. ed if necessary Have it checked by a trained electrical specialist and replaced if necessary Use an extension cord with an ade quate conductor cross section 10 Disposal ES Most of the materials from which Hilti power tools or appliances are manufactured can be recycled The materials must be correctly separated before they can be recycled In many countries Hilti has already made arrangements for taking back your old power tools or appliances for recycling Please ask your Hilti customer service department or Hilti representative for further information 11 Manufacturer s warranty tools Hilti warrants that the tool supplied is free of defects in material and workmanship This warranty is valid so long as the tool is operated and handled correctly cleaned and serviced properly and in accordance with the Hilti Operating Instructions and the technical system is main tained This means that only original Hilti consumables components and spare parts may be used in the tool This warranty provides the free of charge repair or re placement of defective parts only over the entire lifespan of the tool Parts requiring repair or replacement as a result of normal wear and tear are not covered by this warranty Additional claims are excluded unless stringent na tional rules prohibit such exclusion In particular Hilti is not obligated for direct indirect incidental or con sequential damages losses or expenses in con
13. er tool do not present a hazard i e by striking yourself other persons or inflammable materials Adjust the position of the guard accordingly In case of an interruption in the electric supply Switch the power tool off and unplug the supply cord This will prevent accidental restarting when the electric power returns 5 7 3 Electrical safety Before beginning work check the working area e g using a metal detector to ensure that no concealed electric cables or gas and water pipes are present External metal parts of the power tool may become live for example when an electric cable is damaged accidentally This presents a serious risk of electric shock Check the power tool s supply cord at regular intervals and have it replaced by a qualified spe cialist if found to be damaged If the power tool s supply cord is damaged it must be replaced with a specially prepared supply cord available from Hilti Customer Service Check extension cords at regular intervals and replace them if found to be damaged Do not touch the supply cord or extension cord if it is damaged while working Disconnect the supply cord plug from the power outlet Damaged supply cords or extension cords present a risk of electric shock Dirty or dusty power tools which have been used frequently for work on conductive materials should be checked at regular intervals at a Hilti Service Center Under unfavorable circumstances dampness or dust adhering to the
14. erlock 13 Guard Abrasive cutting disc abrasive grinding disc 15 Wrench 1 General information 1 1 Safety notices and their meaning DANGER Draws attention to imminent danger that will lead to serious bodily injury or fatality WARNING Draws attention to a potentially dangerous situation that could lead to serious personal injury or fatality CAUTION Draws attention to a potentially dangerous situation that could lead to slight personal injury or damage to the equipment or other property NOTE Draws attention to an instruction or other useful informa tion 1 2 Explanation of the pictograms and other information Warning signs 7 IN General warning Warning electricity Warning hot surface Obligation signs Location of identification data on the power tool ae e TES The type designation and serial number can be found on the type identification plate on the machine or tool Make a note of this data in your operating instructions and always refer to it when making an enquiry to your Hilti representative or service department Wear Wear a hard Wear ear Wear protective hat protection protective glasses gloves Type Generation 03 ans Serial no Wear breathing protection Symbols AY O V A Read the Return waste Volts Amps operating material for instructions recycling before use Hz uv min RPM Hertz Alternating Revolutions Revolutions current per minute per min
15. es Keep children and bystanders away while operat ing a power tool Distractions can cause you to lose control 5 1 2 Electrical safety a Power tool plugs must match the outlet Never modify the plug in any way Do not use any adapter plugs with earthed grounded power tools Un modified plugs and matching outlets will reduce risk of electric shock Avoid body contact with earthed or grounded surfaces such as pipes radiators ranges and refrigerators There is an increased risk of electric shock if your body is earthed or grounded Do not expose power tools to rain or wet condi tions Water entering a power tool will increase the risk of electric shock Do not abuse the cord Never use the cord for carrying pulling or unplugging the power tool Keep cord away from heat oil sharp edges or moving parts Damaged or entangled cords increase the risk of electric shock When operating a power tool outdoors use an extension cord suitable for outdoor use Use of a cord suitable for outdoor use reduces the risk of electric shock If operating a power tool in a damp location is unavoidable use a residual current device RCD protected supply Use of an RCD reduces the risk of electric shock 5 1 3 Personal safety a Stay alert watch what you are doing and use common sense when operating a power tool Do not use a power tool while you are tired or under the influence of drugs alcohol or medication A moment of inattent
16. essory Corners sharp edges or bouncing have a tendency to snag the rotating accessory and cause loss of control or kickback Do not attach a saw chain woodcarving blade or toothed saw blade Such blades create frequent kickback and loss of control 5 4 Safety warnings specific for grinding and a abrasive cutting off operations Use only wheel types that are recommended for your power tool and the specific guard designed for the selected wheel Wheels for which the power tool was not designed cannot be adequately guarded and are unsafe The grinding surface of centre depressed wheels must be mounted below the plane of the guard lip An improperly mounted wheel that projects through the plane of the guard lip cannot be adequately protected The guard must be securely attached to the power tool and positioned for maximum safety so the least amount of wheel is exposed towards the op erator The guard helps to protect operator from bro ken wheel fragments accidental contact with wheel and sparks that could ignite clothing Wheels must be used only for recommended ap plications For example do not grind with the side of cut off wheel Abrasive cut off wheels are intended for peripheral grinding side forces applied to these wheels may cause them to shatter Always use undamaged wheel flanges that are of correct size and shape for your selected wheel Proper wheel flanges support the wheel thus reduc ing the possibility of wheel
17. face when grinding Move the power tool to and fro while applying moderate pressure This will avoid overheating and discoloration of the workpiece and ensure an even surface finish 7 2 Cutting When cutting apply moderate feed pressure and do not tilt the power tool or respectively the cutting disc hold at approx 90 to the surface being cut For best results start cutting at the smallest cross section when cutting profiles and square tube 7 3 Switching on off In the event of motor overload due to application of excessive pressure to the disc performance will drop noticeably or the power tool may stop running avoid stalling the power tool in this way Permissible tool overload cannot be given as a specific value as it depends on the temperature of the motor If the power tool has been overloaded release the pressure applied and then allow it to run under no load for approx 30 seconds 7 3 1 Switching on AG 450 7S Plug the supply cord into the power outlet Press the rear section of the on off switch Slide the on off switch forward Lock the on off switch cais lik 7 3 2 Switching off AG 450 7S Press the rear section of the on off switch The on off switch jumps back to the off position 7 3 3 Switching on AG 450 7D El The hold to run switch with built in safety interlock en ables the user to check the switch function and prevents inadvertent starting of the power tool 1 Plug the sup
18. h the mounting hardware of the power tool will run out of balance vibrate excessively and may cause loss of control g Do not use a damaged accessory Before each use inspect the accessory such as abrasive wheels for chips and cracks backing pad for cracks tear or excess wear wire brush for loose or cracked wires If power tool or accessory is dropped inspect for damage or install an undamaged accessory After inspecting and installing an accessory position yourself and bystanders away from the plane of the rotating accessory and run the power tool at maximum no load speed for one minute Damaged accessories will normally break apart during this test time h Wear personal protective equipment Depending on application use face shield safety goggles or safety glasses As appropriate wear dust mask hearing protectors gloves and workshop apron capable of stopping small abrasive or workpiece fragments The eye protection must be capable of stopping flying debris generated by various operations The eye protection must be capable of stopping flying debris generated by various opera tions The dust mask or respirator must be capable of filtrating particles generated by your operation Pro longed exposure to high intensity noise may cause hearing loss i Keep bystanders a safe distance away from work area Anyone entering the work area must wear personal protective equipment Fragments of workpiece or of a broken accessory may fly
19. ion while operating power tools may result in serious personal injury Use personal protective equipment Always wear eye protection Protective equipment such as dust mask non skid safety shoes hard hat or hearing protection used for appropriate conditions will reduce personal injuries Prevent unintentional starting Ensure the switch is in the off position before connecting to power source and or battery pack picking up or carrying the tool Carrying power tools with your finger on the switch or energising power tools that have the switch on invites accidents Remove any adjusting key or wrench before turn ing the power tool on A wrench or a key left at tached to a rotating part of the power tool may result in personal injury Do not overreach Keep proper footing and bal ance at all times This enables better control of the power tool in unexpected situations Dress properly Do not wear loose clothing or jewellery Keep your hair clothing and gloves away from moving parts Loose clothes jewellery or long hair can be caught in moving parts If devices are provided for the connection of dust extraction and collection facilities ensure these are connected and properly used Use of dust collection can reduce dust related hazards 5 1 4 Power tool use and care a Do not force the power tool Use the correct power tool for your application The correct power tool will do the job better and safer at the rate for which it
20. ize the risk of wheel pinching and kickback Large workpieces tend to sag under their own weight Supports must be placed under the workpiece near the line of cut and near the edge of the workpiece on both sides of the wheel Use extra caution when making a pocket cut into existing walls or other blind areas The pro truding wheel may cut gas or water pipes electrical wiring or objects that can cause kickback 5 6 Safety warnings specific for wire brushing a operations Be aware that wire bristles are thrown by the brush even during ordinary operation Do not overstress the wires by applying excessive load to the brush The wire bristles can easily penetrate light clothing and or skin If the use of a guard is recommended for wire brushing do not allow any interference of the wire wheel or brush with the guard Wire wheel or brush may expand in diameter due to work load and centrifugal forces 5 7 Additional safety instructions 5 7 1 Personal safety f Wear ear protectors Exposure to noise can cause hearing loss Always hold the power tool securely with both hands on the grips provided Keep the grips dry clean and free from oil and grease Breathing protection must be worn if the power tool is used without a dust removal system for work that creates dust Improve the blood circulation in your fingers by relaxing your hands and exercising your fingers during breaks between working Avoid touching rotating parts S
21. ly marked for this application 2 6 Using a generator or transformer This power tool may be powered by a generator or transformer when the following conditions are fulfilled The unit must provide a power output in watts of at least twice the value printed on the type identification plate on the power tool The operating voltage must remain within 5 and 15 of the rated voltage at all times frequency must be in the 50 60 Hz range and never above 65 Hz and the unit must be equipped with automatic voltage regulation and starting boost Never operate other power tools or appliances from the generator or transformer at the same time Switching other power tools or appliances on and off may cause undervoltage and or overvoltage peaks resulting in damage to the power tool 2 7 Front cover for the disc guard El CAUTION When grinding with straight grinding discs and cutting with cutting discs in metalworking applications use the guard with front cover 3 Consumables Discs with a diameter of max 4 5 designed for a speed of 11500 min and a peripheral speed of 80 m sec and with a maximum thickness of 4 abrasive grinding discs or Vs abrasive cutting discs Discs wire brushes Application Designation Material Abrasive cutting disc metal Diamond cutting disc mineral Abrasive grinding disc metal Diamond grinding disc mineral Assignment of accessories e g discs brushes to the equipment used Equipment AC D AG D AF D AN D DG C
22. nec tion with or by reason of the use of or inability to use the tool for any purpose Implied warranties of merchantability or fitness for a particular purpose are specifically excluded For repair or replacement send the tool or related parts immediately upon discovery of the defect to the address of the local Hilti marketing organization provided This constitutes Hilti s entire obligation with regard to warranty and supersedes all prior or contemporaneous comments and oral or written agreements concerning warranties elias Hilti Corporation LI 9494 Schaan Tel 423 234 21 11 Fax 423 234 29 65 www hilti com Hilti registered trademark of Hilti Corp Schaan W 4329 1213 00 Pos 3 1 Printed in China 2013 Right of technical and programme changes reserved S E amp O 2075440 A2
23. nted in the operating instructions concerning operation care and maintenance The power tool is designed for professional use and may be operated serviced and maintained only by trained authorized personnel This personnel must be informed of any special hazards that may be encountered The power tool and its ancillary equipment may present hazards when used incorrectly by untrained personnel or when used not as directed Modification of the power tool or tampering with its parts is not permissible 2 2 Switches Lockable on off switch AG 450 7S On off switch with switch on interlock AG 450 7D 2 3 The items supplied in the cardboard box are Power tool Guard Front cover for the disc guard Side handle Clamping flange Clamping nut Wrench Operating instructions Cardboard box VR hb h RR ee ee 2 4 Using extension cords Use only extension cords of a type approved for the application and with conductors of adequate cross section The power tool may otherwise loose performance and the extension cord may overheat Check the extension cord for damage at regular intervals Replace damaged extension cords Recommended minimum conductor cross section and max cord lengths Conductor cross section 14 AWG 12 AWG Mains voltage 110 120 V 200 ft Do not use extension cords with 16 AWG conductor cross section 2 5 Using extension cords outdoors When working outdoors use only extension cords that are approved and corresponding
24. ply cord into the power outlet 2 Press the safety interlock to unlock the hold to run switch 3 Press the hold to run switch fully 7 3 4 Switching off AG 450 7D When the hold to run switch is released the safety inter lock returns automatically to the locked position 8 Care and maintenance CAUTION Disconnect the mains plug from the power outlet 8 1 Care of the power tool DANGER When working on metal under extreme conditions con ductive dust may accumulate inside the power tool This may negatively affect the power tool s protective in sulation Under such conditions the tool should be plugged into a ground fault circuit interrupter GFCI and use of a stationary dust removal system and frequent cleaning of the tool s cooling air slots is recommended The outer casing of the power tool is made from impact resistant plastic Sections of the grip are made from a synthetic rubber material Never operate the power tool when the air vents are blocked Regularly clean the power tool s air vents care fully with a dry brush Do not permit foreign objects to enter the interior of the tool The motor s fan will draw dust into the casing and an excessive accumulation of conductive dust e g metal carbon fiber may cause electrical hazards Clean the outside of the power tool at regular intervals with a slightly damp cloth Do not use a spray steam pressure cleaning equipment or running water for cleaning This
25. tion appropriate for the type of dust generated and designed to filter out microscopic particles and direct dust away from the face and body Avoid prolonged contact with dust Wear protec tive clothing and wash exposed areas with soap and water Allowing dust to get into your mouth eyes or to remain on your skin may promote absorp tion of harmful chemicals 5 7 2 Power tool use and care a b sara Grinding discs must be stored and handled care fully in accordance with the manufacturer s in structions Check that the grinding disc is fitted in accor dance with the manufacturer s instructions If use of a spacer ring or other intermediate part is specified and the part is supplied with the grinding disc check to ensure that the part is fitted Before use check that the cutting disc has been fitted correctly and the clamping nut tightened Then allow the power tool to run for 60 seconds under no load while holding it securely Switch off the power tool immediately if significant vibration or any other faults are noticed Should this occur examine the power tool in order to determine the cause Never use the power tool without the guard The workpiece must be fixed securely in place Do not use cutting discs for grinding After disc breakage or if the power tool is dropped falls or suffers other mechanical damage it must be checked at a Hilti Service Center Take steps to ensure that flying sparks from the pow
26. ute Rated speed Diameter Double insulated 2 Description 2 1 Use of the product as directed The power tool is designed for cutting grinding and brushing metal and mineral materials without use of water The working environment may be as follows construction site workshop renovation conversion or new construction The power tool may be operated only when connected to a power supply providing a voltage and frequency in compliance with the information given on its type identification plate Working with metals Cutting grinding brushing Working with mineral materials Cutting slitting and grinding Use only discs abrasive grinding discs abrasive cutting discs etc that are approved for use at a speed of at least 11500 min with a maximum thickness of 14 grinding discs or Vs cutting discs and a diameter of max 4 5 Use only synthetic resin bonded fiber reinforced grinding discs or cutting discs approved for use at a permissible peripheral speed of at least 80 m sec The power tool may be used only for dry cutting or grinding Working on materials hazardous to the health e g asbestos is not permissible Take the influences of the surrounding area into account Do not use the power tool or appliance where there is a risk of fire or explosion Nationally applicable industrial safety regulations must be observed To avoid the risk of injury use only genuine Hilti accessories and insert tools Observe the information pri
27. ving parts when making adjustments or when remedying malfunc tions CAUTION Adjust the position of the guard to suit the require ments of the work being done CAUTION The closed side of the guard must always face the operator 6 2 1 Fitting and removing the guard NOTE The guard is already set to the correct tension by way of the adjusting screw If the tension is too low when the guard is fitted the adjusting screw can be tightened slightly to increase the tension NOTE The keyed locating lug on the guard ensures that only a guard designed for use with the power tool can be fitted The keyed locating lug also prevents the guard from coming into contact with the disc 1 Release the clamping lever 2 Fit the guard onto the spindle collar so that the keyed locating lug engages in the recess provided 3 Rotate the guard to the required position 4 CAUTION The closed side of the guard must always face the operator Secure the guard by closing the clamping lever 5 Toremove the guard from the power tool follow the instructions for fitting the guard but carry out the steps in the reverse order 6 2 2 Fitting the front cover El 1 Press the front cover onto the standard guard with the closed side positioned as shown in the illustra tion until it engages 6 2 3 Adjusting the guard El 1 Release the clamping lever 2 Rotate the guard to the desired position 3 Close the clamping lever 6 3 Fitting and remo
28. ving the disc A CAUTION Wear gloves when fitting or removing parts when making adjustments or when remedying malfunc tions DANGER Check that the speed rating printed on the cutting or grinding disc is equal to or higher than the rated speed of the power tool DANGER Check the condition of the disc before using it Do not use discs that are broken cracked or damaged in any way NOTE Diamond discs must be replaced when the cutting or grinding performance drops significantly This generally is the case when the segments reach a height of less than 46 Other discs must be replaced when the cutting performance drops significantly or other parts of the angle grinder not the disc come into contact with the material you are working on Abrasive discs generally have to be replaced when the durability date has been reached Clean the clamping flange Fit the clamping flange onto the drive spindle Fit the disc Screw on the clamping nut corresponding to the type of disc fittedKA oe E 5 CAUTION Do not press the spindle lockbutton before the drive spindle has stopped rotating Press the spindle lockbutton and hold it in this position 6 Use the wrench to tighten the clamping nut securely and then release the spindle lockbutton 7 To remove the disc from the power tool follow the instructions for fitting the disc but carry out the steps in the reverse order 6 4 Fitting and removing accessories e g discs brushes
29. witch the power tool on only after bringing it into position at the workpiece Touching rotating parts especially rotat ing insert tools may lead to injury Always lead the supply cord and extension cord away from the power tool to the rear while work ing This helps to avoid tripping over the cord while working Children must be instructed not to play with the power tool The power tool is not intended for use by children by debilitated persons or those who have received no instruction or training Before beginning the work check the hazard clas sification of the dust that will be produced Use an industrial vacuum cleaner with an officially approved protection classification in compliance with locally applicable dust protection regula tions WARNING Some dust created by grinding sand ing cutting and drilling contains chemicals known to cause cancer birth defects infertility or other reproductive harm or serious and permanent res piratory or other injury Some examples of these chemicals are lead from lead based paints crys talline silica from bricks concrete and other masonry products and natural stone arsenic and chromium from chemically treated lumber Your risk from these exposures varies depending on how often you do this type of work To reduce exposure to these chemicals the operator and bystanders should work in a well ventilated area work with ap proved safety equipment such as respiratory pro tec
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